function sendRequest() {
  const xhr = new XMLHttpRequest();
  var myDiv = document.getElementById("MyDivElement");  
  var url = "../../cgi-bin/TI_2025/lab07/ajax_json.py" ;
  xhr.open("GET", url, true);
  xhr.responseType = "json" ;	
  xhr.addEventListener("load", e => {
    if ( xhr.status == 200 )  {
         response = xhr.response;
         console.log(response);
         html = "" ;
         for ( let i=0; i<response.students.length ; i++)
               html += response.students[i].fname + " " + response.students[i].lname + "<br/>" ;
         myDiv.innerHTML += html ;
         // myDiv.innerHTML += xmlHttp.getAllResponseHeaders() + "<br />" ;
         // myDiv.innerHTML += response + "<br/>";
         // myDiv.innerHTML += xhr.getAllResponseHeaders() + "<br />" ;
    }
  })	  
  xhr.addEventListener("progress", e => {
     myDiv.innerHTML += "Status zadania: " + xhr.readyState + " (progress) <br/>" ;  
  });
 
  xhr.addEventListener("error", e => {
    alert("Nie udało się nawiązać połączenia");
  });

  xhr.send();
}